Kousei is straight-forward, kind to everyone, and considered an oasis by his class. However, his tolerance for erotic things is that of a grade schooler and he isn't very good when it comes to love... Because of that, he keeps this inferiority complex a secret. On the other hand, Nao is always surrounded by girls. One day, Kousei happens to see Nao kissing a girl... After Kousei reveals he worries about not seeming mature enough, Nao tells him, "You could just kiss someone and get it over with?" A kiss with...Nao? Could he do something like that? The class' most popular guys being brought closer to each other is set in motion!? A love story that deepens with heart pounding kisses!